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  • Articles: DFG German National Licenses  (5)
  • 1980-1984  (3)
  • 1970-1974  (2)
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  • Articles: DFG German National Licenses  (5)
Material
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Chemical reviews 81 (1981), S. 365-414 
    ISSN: 1520-6890
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 84 (1972), S. 657-667 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Beschreibung der Bindung in Olefin- und Acetylen-Metall-Komplexen mit Hilfe der Molekülorbital(Molecular Orbital, MO)- und Valenzstruktur(Valence Bond, VB)-Theorien wird bezüglich ihres Vermögens, die physikalischen Eigenschaften solcher Komplexe erklären zu können, überprüft. Wie aus den Ergebnissen geschlossen wird, ist im Gegensatz zur VB-Beschreibung, bei deren Anwendung sich Schwierigkeiten ergeben die MO-Beschreibung imstande, alle bisher bekannten Eigenschaften dieser Komplexe befriedigend zu erklären; sie besitzt zudem die nötige Vielseitigkeit, um leicht auf jede Art von Olefin- sowie Acetylen-Metall-Komplex anwendbar zu sein. Derartige Komplexe lassen sich vorteilhaft in zwei Klassen einteilen: Zum einen in Verbindungen, die den Platin(II)-Komplexen ähneln (Klasse S), von quadratisch-planarer oder oktaedrischer Struktur sind und in denen nahezu ungehinderte Rotation um die Metall-Olefin(Acetylen)-Bindung möglich ist  -  zum anderen in Verbindungen, die entweder trigonal-planar oder trigonal-bipyramidal aufgebaut und mit den Platin(0)-Komplexen zu vergleichen sind (Klasse T); in ihnen liegt keine freie Drehbarkeit um die Metall-Olefin- oder-Acetylen-Bindung vor.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Angewandte Chemie International Edition in English 11 (1972), S. 596-606 
    ISSN: 0570-0833
    Keywords: Bond theory ; Alkenes ; Alkynes ; Alkene ligands ; Alkyne ligands ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The molecular orbital (MO) and valence bond (VB) descriptions of the bonding in metalolefin and -acetylene complexes are examined in relation to their ability to explain the known properties of these complexes. It is concluded that whereas there are difficulties with the valence bond description, the molecular orbital description can satisfactorily explain all the known properties of these complexes and has the necessary versatility to enable it to be readily applied to any series of metal-olefin or -acetylene complexes. It is further shown that olefin and acetylene complexes can be usefully divided into two main classes: those that resemble the platinum(II)-complexes (class S), and are either square-planar or octahedral with essentially free rotation about the metal-olefin bond; and those that resemble platinum(0)-complexes (class T) and are either trigonal planar or trigonal bipyramidal and in which there is no rotation about the metal-olefin or -acetylene bond.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 16 (1981), S. 272-274 
    ISSN: 0030-493X
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The mass spectra are reported for a series of tris(p-alkylaryl)phosphines and the corresponding phosphine oxides. The phosphines all give [M]+· as the base peak except when the phenyl groups are not para substituted. For the oxides [M-H]+ gives the base peak with one exception for which [M]+· is the most abundant ion.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Chemistry Edition 20 (1982), S. 2395-2408 
    ISSN: 0360-6376
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: p-Styryldiphenylphosphine was grafted onto polypropylene by γ-radiation. However, olefinic phosphines in general do not readily undergo such grafting. Among the many other olefinic phosphines examined only 1-(4-diphenylphosphinophenyl)-prop-1-ene and vinyldiphenylphosphine were grafted successfully and both had low grafting yields. The optimum conditions for grafting involve low dose rates and high total doses of γ-radiation in dimethylsulfoxide as solvent. This grafting is sensitive to impurities and inhomogeneity in the product readily results, especially at high grafting yields. Oxygen must be rigorously excluded if oxidation of grafted phosphorus(III) to phosphorus (V) is to be avoided. Phosphine oxides can be reduced to phosphines when grafted to the polymer with trichlorosilane. Mass spectrometry has shown that more than one olefinic phosphine binds to a single site in the polymer. Solid-state, high-resolution 31P-NMR is a valuable technique for characterizing the grafted polymer. The preparation and characterization of the following hitherto unreported phosphines is described: In addition, the precursor halides none of which has been reported, were prepared and characterized.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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